Comment 1 for bug 283869

thks zagadka for the comment,

that's the normal behavior of the app, when somebody filter by Language we auto-select all the first subtitle of every video because in most of the cases people will like to click on the DOWNLOAD button after that and download all those subtitles without having to select 1 by 1 (in case of a series this can be a bit tedious).

What I can take from this bug is that SD should not select the subtitles that have been already downloaded.